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What is a pure virtual function?
Why is it represented as = 0...how is the internal
implementation for the same
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Answer / vikas
A pure virtual function makes a class abstract.0 is used in
its representation to distinguish it from a normal virtual
function. More at
http://www.cppquestions.com/viewtopic.php?f=26&t=14
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / helloworld
I believe pure virtual function is a member function with a
declaration as NULL;
virtual void fun()=0;
Now why zero,since the internal implementation of virtual
function is collection of function pointer ...we intialize
this value of function pointers as NULL.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / viji
A virtual function with a null body is said to be pure
virtual function.
The pure virtual function can be defined later in its
derived class.......
| Is This Answer Correct ? | 3 Yes | 2 No |
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